Segment Information (Tables)

3 Months Ended

Jul. 03, 2016

Segment Reporting [Abstract]

Summary of Segment Information

(In thousands)	Industrial		Water Treatment		Health and Nutrition		Total
Three months ended July 3, 2016:
Sales	$	63,788	$	35,636	$	31,950	$	131,374
Gross profit	10,422		10,629		7,165		28,216
Selling, general, and administrative expenses	5,395		5,064		4,667		15,126
Operating income	5,027		5,565		2,498		13,090
Three months ended June 28, 2015:
Sales	$	67,588	$	33,908	$	—	$	101,496
Gross profit	10,714		10,021		—		20,735
Selling, general, and administrative expenses	5,199		4,692		—		9,891
Operating income	5,515		5,329		—		10,844